Warm Dark Matter from Higher-Dimensional Gauge Theories

TL;DR

This paper proposes a higher-dimensional gauge theory model that naturally produces warm dark matter particles around 2 keV, linking advanced particle physics with cosmological and astrophysical observations.

Contribution

It introduces a novel higher-dimensional framework that simultaneously accounts for the standard model and warm dark matter particles, consistent with observational constraints.

Findings

Model accommodates 2048 fermionic degrees of freedom for dark matter.

Predicts a warm dark matter particle mass of approximately 2 keV.

Aligns with large and small-scale cosmological constraints.

Abstract

Warm dark matter particles with masses in the keV range have been linked with the large group representations in gauge theories through a high number of species at decoupling. In this paper, we address WDM fermionic degrees of freedom from such representations. Bridging higher-dimensional particle physics theories with cosmology studies and astrophysical observations, our approach is two-folded, i.e., it includes realistic models from higher-dimensional representations and constraints from simulations tested against observations. Starting with superalgebras in exceptional periodicity theories, we discuss several symmetry reductions and we consider several representations that accommodate a high number of degrees of freedom. We isolate a model that naturally accommodates both the standard model representation and the fermionic dark matter in agreement with both large and small-scale constraints. This model considers an intersection of branes in $D=27+3$ in a manner that provides the degrees of freedom for the standard model on one hand and 2048 fermionic degrees of freedom for dark matter, corresponding to a $\sim$2 keV particle mass, on the other. In this context, we discuss the theoretical implications and the observable predictions.